Might be a long shot but if you own a ESR meter , can you check the Caps near the AGP socket, it could just be that the other cards have better filtering?

Also it might be worth a shot to try either a newer or an older bios and see if it makes any difference.

Its a very strange issue, I have had a board with a bad filter cap on the agp side of things causing havoc with some cards, but it was a once off thing and not specific to Nvidia cards only...

I'm benching on another board currently, will definitely try the AOpen again later. I could even replace all the caps, although they all look great, Sanyo too, AOpen usually used Japanese caps.

Visually caps can be deceiving , not all of them bulge or leak, some dry out over time and look normal, till you test them with a ESR meter.

But it might not be that, its a very strange problem.

PhilsComputerLab wrote:

I'm benching on another board currently, will definitely try the AOpen again later. I could even replace all the caps, although they all look great, Sanyo too, AOpen usually used Japanese caps.

It's 17 or 18 years old now (I'm guessing). That's a lot, even for top quality Japanese caps. All caps have a finite lifespan even if they're on a product that's NIB.

Yes I know, but the caps aren't the problem.